Handover techniques
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United States of America Patent
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Jan 11, 1994
Grant Date -
N/A
app pub date -
Feb 14, 1991
filing date -
Apr 6, 1990
priority date (Note) -
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Abstract
In a cellular radio system having a two layer cell structure comprised by macrocells (1) overlaying microcells (2), handover occurs only via the macrocell layer. Thus when the quality of a call handled by a microcell (2) deteriorates below predetermined criteria the call is handed up rapidly to the umbrella macrocell and is only handed back down to a microcell when the handset has been in that microcell for a predetermined time and the quality of the link thereto exceeds predefined criteria.
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